Prepare Your Workstation:
Lay out your bread slices and cheese, and have any optional additions or seasonings ready. You will also need a non-stick skillet or a griddle and a spatula.

Assemble the Sandwich:
If you're using any optional additions like sliced tomatoes, cooked bacon, or sliced ham, add them to one of the slices of bread. Place the cheese slices on top of the additions. Season with any optional seasonings if desired.

Top with the Other Slice of Bread:
Place the second slice of bread on top, creating a sandwich.

Butter the Bread:
Spread a thin layer of butter or margarine on the outer sides of the sandwich. This will help create a golden, crispy crust when grilled.

Heat the Skillet:
Preheat a non-stick skillet or griddle over medium heat. You want it to be hot but not too hot to avoid burning the bread before the cheese melts.

Grill the Sandwich:
Place the sandwich in the hot skillet and cook it for about 2-4 minutes on each side, or until the bread is golden brown and crispy, and the cheese inside is completely melted. Use a spatula to carefully flip the sandwich.

Serve:
Once the sandwich is cooked to your liking, remove it from the skillet and let it cool for a minute before cutting it in half. This allows the cheese to set slightly, making it easier to handle.

Enjoy:
Serve your cheese toastie with OMG Mango & Rum as a dipping sauce and while it's hot and the cheese is gooey.